The R1 Concepts Geo-Carbon drilled-and-slotted rotor is specified for conventional rear or front left positions on 1973–1998 International/Navistar S-series applications. The description highlights the drilled-and-slotted rotor face together with the Geo-Carbon designation. This entry denotes left-side fitment across the stated S-model years; verify exact vehicle application and side prior to installation.
R1 73-98 International/Navistar S Models Conventional Rear/Front Left Drill & Slot Geoperf Rotor